Astronomy : a revision of young's manual of astronomy. I, The solar system /

Autor Russel, Henry Norris, Dugan, Raymond Smith, 1878-1940, Stewart, John Quincy
Vydáno 1926

Astronomy : a revision of young's manual of astronomy. II, Astrophysics and stellar astronomy /

Autor Russel, Henry Norris, Dugan, Raymond Smith, 1878-1940, Stewart, John Quincy
Vydáno 1927